Pms

[Britney]

A powerful spell that women are put under about once every month, which gives them the strength of an ox, the stability of a Windows OS, and the scream of a banshee. Basically, mans worst nightmare.

[PussyCat]

Pre-Menstrual Syndrome
The womans time of the month when her uterus sheds its lining because her monthly egg isnt fertilized and dies.
The worst time to be around a woman, because she becomes an irrational [psycho] [bitch] which froths at the mouth with [rage] and seeks to destroy anything which stands in her way.

[PussyCat]

a time when you should avoid all women; major moodswings; i.e. watch your back, ho.

[Mark Zuckerberg]

The transformation of woman to beast, occurring once every month. Similar to the werewolf, a PMSing woman becomes a dog-like creature capable only of eating, sleeping, barking, annoying the neighbors, and leaving messes that she expects you to clean up.

[Justin Bieber]

PMS stands for premenstrual syndrome, but it can even occur during or after menstruation. Symptoms of PMS include abdominal cramps, bloating, irritability, breast tenderness, occasional cravings for sweet or very salty foods, and hormonal imbalances that cause mood swings.
Since males dont have periods, they act like insensitive jackasses when the women around them are suffering from PMS. Those stuck-up dickless monkeys cant get any ass, so they call their girlfriends bitches and blow everything out of proportion. Sure, sometimes PMS can cause a girl to get a little bitchy, but those douchebags act like a PMSing woman is a nuclear bomb thats been unleashed on the city. All they think about is themselves, they dont even give a crap when their girl is crying out in pain because the girl is just being a dramatic bitch.
A guy will accuse a girl of PMSing even if she gets mad at him for something thats his own fault, such as being a complete dickhole.

[Sarah]

innate bitchiness of a woman between age 9 and age 56 just before her period

[Becky]

Something guys think THEY have to deal with.

[Mark Zuckerberg]

Pass Me the Shotgun